Process for the manufacture of a mixture of gas and air for illuminating purposes.



F. W. WOLF?. PROCESS FOR THB MANUFAGTURE OF A MIXTURE OF GAS AND AIR POR ILLUMINATING PURPOSES.

APPLICATION FIL-BD PBB.7, 1906.

Patented sept.28,19o9.

UNITED srarns Parana onrein FRIEDRICH WILHELM WOLFF, OF BERLIN, GERMANY, SSIGNOB TO THE FIRM OF SELAS-GESELLSCHAFT MIT BESCHRNKTER HAFTUNG, OF BERLIN, GERMANY.

PROCESS FOR lTHE MANUFACTURE OF A MIXTURE OF GAS AND AIR FOR ILLUMINATING PURPOSES,

Specification of Letters Patent.

Application filed February -7, 1906.

Patented Sept. 2S, 19119.

Serial No. 300,021.

To alt whom tt may concern:

l'e it known that I, Fiunmncn lVILnnmi Wonrr, chief engineer, a subject of the German Emperor, and a resident f Berlin, Germany, have invented a certain new and useful Improved Process .for the Manufacture of a Mixture of Gas and Air for Illumihating Purposes and Installation 'lhereforv` of which the following lis a specification.

The invention relates to an improved method or process for the production of a gas and air mixture for illuminating purpose there being' a connection with the pipes of a gas work and employed a suction and forcing apparatus which produces and sucks the mixture at low pressure and feeds it at an increased pressure to the consumption place.

The object of the invention is to prevent unequal mixing proportions of gas and air bybringing one of the two constituents of the mixture to the pressure of the other before the suction of the mixture takes place. This may be effected in such a manner. that before its suction the air is brought to the pressure `of the gas or that the gas iskdecreased to the zero pressure of the air.

Several examples of means for carrying the process into practiceare illustrated in the accompanying d anfing, in which:

Figure 1 shows diagrammatically an installation with rotary supply apparatus. Fig. 2 shows a detail of Fig. l in which the an' is raised to the pressure of the gas. Fig. 3 illustrates an installation With piston vsupply apparatus in which the gas is conducted to the suction pipe Without pressure.

In the manner of carrying the invention into practice in accordancel with Figs. l and 2, the suction and forcing apparatus (for eX- ample a continuously rotating device l which may be driven olf asuitable motor 3 by means of a belt 2) sucks the gas and air -mixture from the suction pipe et and then supplies it to the service main 5. The burners 7,- 8 and the like are connected with the service pipe in an appropriate manner by means of branch pipes A6, r[he gas flows through the pipe 9 and the air through the socket l0. f

Now in order to maintain the'tWo presi" sure differences referred to 1n the introdup.-n

suction pipe l and the air supply pipe 10 on the other hand, equal in their propor tional ,constant ratio and to prevent irregularities in the mixing proportion of gas and air the gas and air are brought to a corresponding pressure before their suction. ln accordance with Fig. 1 this takes place by means of two suction and forcing apparatus 1l, 12 which may be constructed in the man` ner of gas meters. It is assumed that the pressure of the gas to be supplied drives both the suction and forcing drums, so that the energyv inherent` in the gas serves as the motor medium for increasing the pressure of the air. ln this manner the advantage is obtained that the energy of the. gas supplied may be almost completely utilized, as by the suction effect of the suction and'forcing apparatus 1 the driving of the two drums 11, 1Q is maintained. In this case gas and air are rendered a vail-able for the suction and forcing apparatus at equal pressures so that the quantitative proportions of gas and air do not vary in spite of varying consumption of the gas and air mixture.

The influences of variations of. pressure in the gas supply pipe may be eliminated b v conducting the gas through a pressure regulator before it reaches the pipe f) and tiows to the drum 11. To this end a pressure regulator known per se such as 1?, in Fig. 1 may be arranged in front of the pipe 9 and connected with the gas supply pipe it.

In carrying the invention into practice in accordance. with Fig. 3 a double acting supply pump 15 is provided and by means of the two suction valves 16, 17 sucks the mixture of gas and air out of the suction pipi` 18 and by means of the' forcing valves 19, 20 supplies it to the service pipe 21. The suction and force pipes of the piston supply pump are also connected in the known manner with circulation pipes 22 in which a nonreturn valve is inserted at 23. This latter is connected (likewise in the known manner) say by means of the regulator 24, with a loo pipef which is in communication with the Y service pipe. So long as the valve QS is closed and communication between the suction valves 1G, 17 and the forcing valves 1S),

20 consequently interrupted, the normal sup ply process takes place. lf, however. the pressure 1n the servico pipe rises above a certam limit, with the consumption, the

rulve oprueih the more so he higher 4he pressure ris Hy this means the resul' attained that with an increase of pressure m the service pipe the supply furnished hy the pump is iniuenoed inasmuch es the sueion valves. i6.' l'( nor only suck from the suction pipe 18 but also :i puri'. of the mixture from the service pipe 2l and he quantity of the mixture sucked from the service pipe 2l- .vermin limits.

ln the construotionul forni in accordance Wiih Fig. 3 the gus, before it is reudereri available for the suction-und forcing up params, flows-1 out of lhe pipe 2G through soule appropriate, known forni of pressure regulator 27 which is ronnerted with the suction :we mixing clunnher 2S) b y nieuus ol' :i pipe 28. Air is int-rodureil into this Chaniher through 30. ln order that with this arrangement likewise he gus und :air may be supplied io the suction :unl forcing zipperetus with corresponding pressures, the pressure regulator 2T is of such construction that the gars reaches the suction chamber through ihe pipe 28 without pressure. y ineens nl speclul. slides or vulves if; E32 the suction orifices 33, 34 for gus und uir nuiy he appie priutely regulated iu cross section.

l it will be understood shui; the drums ll unil l2 do not equalize the pressure 'of gus and :nir except in the sense that the drum l2 brings the air te the p11-assure of he ges so that both gus and air :are sucked in under e common pressure by the action of he apparatus l. Both drums muy he construeed uil'er the memier or' gas meters.

Whew il. claim and desire to ser-ure by Letters Patent 01' the United Siates is The method herein described, of produ@ ing,r u mixture of gas and air, which consists in raking u quuntiay of ges and e` quunity of uir ut liiierent pressures, emi in different volumes, altering the pressure of one of these two coustiuents so as to maire it exactly eqiiul to he pressure of the oiher constituent, while maintaining the relative proporion of the two constituents, thus bringing the gas unil. uir to u common pressure before mixing suini gus and :gir together, then mixing seid gus and air, :nifl finally increasing the pressure of the mixture to a compiiraiively high degree for the purpose of forcing Said mixture to the pieve of consumption.

in testin'iouy whereo'l have hereunto set my hund in presencef two sui'iscrihing witnesses.

FRIEDRlCll Wlliilhlii WOLF?.

ll'yinesses:

liuxnr lAsrEn,

i'oLneMAn HA Urfr. 

